How to present the following results

How to present the following results I mean: there is a login page. if the logon is successful, the check page will jump to the main interface after checking, and then the logon succeeded account will appear on the main interface. How can this be done? for example, no, the session is used to discuss the session, so we can use the cookie .. A. php & lt ;? Filter php // post data. how can I present the following results?
I mean: there is a login page. if the logon is successful, the check page will jump to the main interface after checking, and then the logon account will appear on the main interface. How can this be done? is there an example?

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Session
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Discussion

Session

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You can use cookies ..
A. php
// Filter the post data
If ($ _ POST ['name'] = 'AAA' and $ _ POST ['pwd'] = 'BBB '){
Setcookie ("name", $ _ POST ['name'], time () + 3600 ,"/");
}
?>
Then B. php
Echo $ _ COOKIE ['name'];
?>
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You can use session or cookie. after successful logon, you can record the data of this person and add a judgment on the home page to display the data.